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Matthew A Kraus
Matthew A Kraus
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How to add points on curve to make a straight line automatically

Jun 27, 2012 5:34 AM

In CS5 and prior versions of PS, you could "make a straight line of points in a curve".  After opening the curve dialog box, draw a straight line with the pencil tool and then click the wavy icon above the pencil tool icon (edit points to modify the curve) and it would automatically place 9 equidistant points on the curve.  WIth CS6, it only places 3 points.  Any way to get 9(or at least multiple) points placed?

 

Thanks,

 

Matthew Kraus

512 Views   9 Replies   Latest reply: Matthew A Kraus, Jun 27, 2012 1:33 PM
 
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  • c.pfaffenbichler
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    1. c.pfaffenbichler,
    Jun 27, 2012 6:46 AM   in reply to Matthew A Kraus
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    Could you please post screenshots to illustrate the issue?

     
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  • c.pfaffenbichler
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    2. c.pfaffenbichler,
    Jun 27, 2012 6:50 AM   in reply to Matthew A Kraus
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    I can produce different results in CS5 and CS6, too.

    The method to interpolate curve points might have been changed, I quess – I doubt the old way would be easily attainable then.

     

    What do you need those equidistanced points for anyway?

     
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  • Matthew A Kraus
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    3. Matthew A Kraus,
    Jun 27, 2012 7:29 AM   in reply to c.pfaffenbichler
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    The first curve image is from CS5 and the second is from CS^.  You can see 9 points on CS5 and 3 on CS6,

    Thanks.

    Untitled-1.jpg

     
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  • Matthew A Kraus
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    4. Matthew A Kraus,
    Jun 27, 2012 7:32 AM   in reply to c.pfaffenbichler
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    I want to change a specific tone in an image without modifying the entire curve.  If I drag a point up or down in a curve, the curve above and below it moves.  With multiple points on the curve, moving one point only effects that one point.

    Thanks,

     

    Matthew Kraus

     
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  • c.pfaffenbichler
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    5. c.pfaffenbichler,
    Jun 27, 2012 8:21 AM   in reply to Matthew A Kraus
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    I assume the old interpretation will not be easily achieved.

    But if the task is a frequent one for you I would recommend using either a Script or an Action to automate creating a Curves Layer with the appropriate number of points on the diagonal axis.

     
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  • conroy
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    6. conroy,
    Jun 27, 2012 10:11 AM   in reply to Matthew A Kraus
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    Save a preset of the nine points in a line.

     
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  • Chris Cox
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    7. Chris Cox,
    Jun 27, 2012 11:07 AM   in reply to Matthew A Kraus
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    So you created a straight light curve, then converted it to a spline curve.

     

    Yes, bug fixes to the spline fitting would reduce the number of points generated. No, there is no way to get that back.

     

    And I'm really not sure what you were trying to do in the first place...

     
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  • Noel Carboni
    20,993 posts
    Dec 23, 2006
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    8. Noel Carboni,
    Jun 27, 2012 12:40 PM   in reply to Chris Cox
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    I  can see how someone could get used to dropping those 9 points then being able to affect only certain elements of the image (e.g., very dark parts, midtones, medium highlights).  Can't say that ever occurred to me, though...  I just build up curves as needed on the general principle that simpler curve operations seem to make more natural-looking results.

     

    Conroy2009 has it right I think.  Matthew, you'll need to learn to select the preset, but you will get a more accurate starting point than you do when you drag the pencil.

     

    -Noel

     
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  • Matthew A Kraus
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    9. Matthew A Kraus,
    Jun 27, 2012 1:33 PM   in reply to Noel Carboni
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    Thanks everyone.

     

    Matthew Kraus

     
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